阿摩線上測驗
5. Certain watch keeping duties are necessary for the continuous operation of equipment or
plan such as the ________.
(A) purifying oil
(B) transferring oil
(C) supplying fuel from rank to engine
(D) heating heavy oil
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統計： A(74), B(417), C(222), D(94), E(0) #3211330
統計： A(74), B(417), C(222), D(94), E(0) #3211330
